The crystal structure of A81 from Sulfolobus Turreted Icosahedral Virus
External Resource: Annotation
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
| B | Rrf2 | e3rklB1 | A: alpha bundles | X: beta-Grasp | H: HTH | T: winged helix domain | F: Rrf2 | ECOD (develop294) |
| C | Rrf2 | e3rklC1 | A: alpha bundles | X: beta-Grasp | H: HTH | T: winged helix domain | F: Rrf2 | ECOD (develop294) |
| D | Rrf2 | e3rklD1 | A: alpha bundles | X: beta-Grasp | H: HTH | T: winged helix domain | F: Rrf2 | ECOD (develop294) |